This set of Human Physiology Multiple Choice Questions & Answers (MCQs) focuses on “Hypothalamus”.
1. What connects hypothalamus to the pituitary?
b) Corpus callosum
d) Cerebral cortex
Explanation: Infundibulam is a funnel shaped structure. It is the connection between hypothalamus and posterior pituitary.
2. Hypothalamus is a part of __________
c) Hind brain
d) Future brain
Explanation: Hypothalamus is the part of the brain that contains a number of small nuclei with a variety of function. It links nervous system to endocrine system.
3. Displacement of the set point in the hypothalamus is due to _________
Explanation: Displacement of the set point in the hypothalamus is due to Pyrogens. Pyrogens are a low molecular weight protein produced in response to stimulation by exogenous pyrogens and released into the circulation system.
4. Hormones produced in hypothalamus are _________
a) Oxytocin and estrogen
b) Oxytocin and testosterone
c) Oxytocin and Antidiuretic hormone
d) Oxytocin and thyroxine
Explanation: Hormones produced in hypothalamus are Oxytocin and Antidiuretic hormone. They have their specific function and specific target site.
5. Which of the following events could be a result of damage to hypothalamus portal system?
a) Decreased secretion of ADH
b) Decreased secretion oxytocin
c) Decreased secretion TSH
d) Decreased secretion PTH
Explanation: Secretion of Thyroid stimulation hormone will be decreased if there is any damage in hypothalamus region.
6. Secretion of many anterior pituitary hormones are controlled by other hormones from _________
a) Pancreatic lobes
b) Adrenal gland
d) Thyroid gland
Explanation: Hypothalamus controls the secretion of anterior pituitary hormones. It is present in the forebrain.
7. Which of the following consists of nerve tissue and down growth from hypothalamus?
a) Posterior pituitary
b) Anterior pituitary
Explanation: Posterior pituitary is the posterior lobe of pituitary gland. It is a collection of axonal projections from hypothalamus that terminate behind anterior pituitary.
8. If hypothalamus fails to secrete GnRH the effect would be _________
a) Hypersecretion of oxytocin
b) Hypersecretion of prolactin
c) Hypersecretion of pituitary gonadotropins
d) Hyposecretion of pituitary gonadotropins
Explanation: GnRH is gonadotropin releasing hormone. They are released in gonads. If hypothalamus fails to secrete GnRH the effect would be Hyposecretion of pituitary gonadotropins.
9. Osmoreceptors in hypothalamus are involved in _________
a) Secretion of GH
b) Secretion of ADH
c) Secretion of ACTH
d) Secretion of Aldosterone
Explanation: Osmoreceptors are sensory receptor found in hypothalamus. It detects changes in osmotic pressure.
10. GnRH directly stimulates release of _________
Explanation: GnRH directly stimulates the release of FSH. It regulates development, growth, pubertal maturation, and reproductive processes of the body.
Sanfoundry Global Education & Learning Series – Human Anatomy and Physiology.
To practice all areas of Human Anatomy and Physiology, here is complete set of 1000+ Multiple Choice Questions and Answers.